In this study, cobalt(II) doped zinc silicate nanophosphors were prepared via a sol-gel route which the solution mixed, stirred and dried in the oven at 100 °C around 6–8 h then undergone different heat treatment (600, 700, 800, 900, and 1000 °C). The nanophosphors powder sample was character...

A novel type of cobalt nanofibers coated with layered nickel silicate (Co nanofibers @ voids @ Ni3Si2O5(OH)4) coaxial core-shell composites were successfully prepared via a well-known Stöber process and two hydrothermal methods. In the composites, the international nanosheet structure of the nic...

3D hierarchical cobalt-nickel silicate hydroxide/C (CoxNi3−xSi2O5(OH)4, denoted as CoNiSi) composites are derived from bamboo leaves and explored as electrode materials for supercapacitor. The CoNiSi architectures with hierarchical petal-like shapes are in-situ generated on 3D amorphous carbon d...

Ammonia has become an attractive source for COx free hydrogen production in order to get high activity from fuel cell applications. In the present study, cobalt incorporated silicate structured catalysts were prepared by one-pot hydrothermal synthesis procedure using cobalt acetate and cobalt ac...

This investigation is devoted to study the influence of CoO concentration on dielectric characteristics of a heavy metal oxide glass system viz., lead bismuth silicate. The auxiliary spectroscopic studies have indicated progressive increase of the fraction of tetrahedral (Td) divalent cobalt ion...

Self-sacrificial biomass-derived silica is a rising and promising approach to fabricate large metal silicates, which are practical water treatment agents ascribed for easy sedimentation and separation. However, the original biomass architecture is difficult to be maintained and utilized. Further...

SummaryDespite heavy research, blue perovskite nanocrystal LEDs have struggled to match the high efficiencies of their red and green cousins, particularly at wavelengths blue enough to meet the NTSC blue standard. One of the most critical problems is the low photoluminescence yield of the nanocr...

Three different size tetragonal tin oxide nanoparticles (SnO2 NPs) were synthesized using ascorbic acid as a complexing agent at three different temperatures 170, 500 and 900 °C for 1 h. The synthesized NPs were characterized by using X-ray diffraction (XRD), Transmission Electron Microscope (T...

Using porous materials to selectively adsorb CO2 from flue gas or natural gas is a promising method for mitigating CO2 emission and purifying methane. Here, we synthesized an L-aspartic acid based microporous metal-organic framework (MIP-202) and studied its adsorptive separation performance for...

MicroRNAs (miRNAs) play important roles in mammalian spermatogenesis, which is highly dependent on Sertoli cells. However, the functions and mechanisms of miRNAs in regulating human Sertoli cells remain largely unknown. Here, we report that hsa-miR-202-3p mediates the proliferation, apoptosis, a...

Two types of cyanobacteria of the genus Arthrospira (commonly known as Spirulina) were tested for biosorption of cerium(III) ions from aqueous solutions. An endemic type (ES) found in the northern Negev desert, Israel, and a commercial powder (CS) were used in this study. Biosorption was evaluat...

A four-step reaction mechanism is proposed for the H2 dissociation over pure ceria and gallium-promoted mixed oxide materials, in a combined experimental and computational investigation. Two samples of cerium-gallium mixed oxides with Ce/Ga atomic ratios equal to 90/10 and 80/20 were studied by ...

The reaction of Ce(OtBu)2(NO3)2, prepared in situ from (NH4)2Ce(NO3)6 and tBuONa in a 1:4 M ratio in THF, and N-phenyldiethanolamine (C6H5)N(CH2CH2OH)2 in a 1:1 M ratio led to a brown solution, to which 1,10-phenanthroline (phen) was added. Yellow crystals of Ce(NO3)3(phen)2 and red crystals of ...

The recovery of rare earths elements (REEs) has become crucial due to their extensive use in progressive technologies. Processing of end-of-life products such as nickel-metal hydride batteries, permanent magnets and fluorescent lamps have turn out to be necessary because REEs are of limited avai...

Metal hydrides are known as a potential efficient, low-risk option for high-density hydrogen storage since the late 1970s. In this paper, the present status and the future perspectives of the use of metal hydrides for hydrogen storage are discussed. Since the early 1990s, interstitial metal hydr...

A process for the separation of cerium from a lanthanide powder using ionic liquids is reported. In a first step, starting from a mixture of cerium(III) sulphate, neodymium(III) sulphate, lanthanum(III) chloride and praseodymium(III) chloride, cerium(III) was successfully oxidised into cerium(IV...

This investigation has demonstrated that a purified protein from bovine blood may be obtained in solid form and in high yield which, when incubated with trypsin, releases pharmacologically active material that appears to be bradykinin or a very similar material. The material liberated contracts ...

In healthy women, there was a 41 per cent fall in plasma bradykininogen 48 (36 to 60) hours before ovulation. Similarly, guinea pigs showed a 79 per cent fall 24 (18 to 30) hours before ovulation; recovery of normal values occurred by the time of ovulation itself. The 59 per cent fall in rats to...

Incubation of bovine bradykininogen with urokinase-activated human plasmin produces kinin activity as demonstrated on the isolated guinea pig uterus. In terms of specific activity, the activation of bradykininogen appeared to be similar to that obtained with trypsin. A dose-response relationship...

As a model for the study of cardiovascular shock, where the participation of bradykinin and related peptides could be expected, trypsin, kallikrein, and a crystalline proteinase of bacterial origin (Nagarse) have been employed. Experimental conditions were found in which hydrolysis of bradykinin...